how to do the conservation of energy (steps

good luck...I and you need it *Using pg 230 , 10 as refrerence in the red book*

Step 1: Formula

KEi + PEi = KEf + PEf

(the I and F can be replaced with another letter, for example, height A or C)

Step 2: Canceling out

If there is a zero in any of the equations, cancel them out (this is result after canceling out, highlighted is what is left over, but it won’t always be this result):

KEi + PEi = KEf + PEf

Step 3: Breaking down the Formula’s

breaking down the formulas to it’s core, it does not matter if it is initial or final, or even a random letter, it is the same (KE = ½ mv² PE = mgh):

mgh = ½ mv²

Step 4 : Canceling out variables

variables that are the same get canceled out, in this case, it is the mass first, then the ½ gets canceled.

cancel the ½ by multiplying it by 2 on both sides, it cancels the ½ and ads 2 onto the gh.

Mgh = ½ mv² Becomes 2gh = V

Step 5: Plug n chug

put all the numbers into the formula, and add a square route over 2gh

2gh = V Becomes (square route sign) 2 × 9.8 × 45 = 30 m/s